This mathlet allows you to solve simple linear equations through the use of a balance beam. Unit blocks (representing 1s) and X-boxes (for the unknown, X), are placed on the pans of a balance beam.More: lessons, discussions, ratings, reviews,...

As students begin to use symbolic representations they use variables as place holders or unknowns. As their use of symbolic representation grows, they need to engage in reasoning about the symbolic r...More: lessons, discussions, ratings, reviews,...

LineUp With Math(TM) consists of six Problem Sets. Each enables students to explore and apply decision-making and proportional reasoning skills to resolve distance-rate-time conflicts in realistic ...More: lessons, discussions, ratings, reviews,...

This activity allows the user to explore simple linear functions. This Java applet requires a Java-capable browser. If you don't see the applet Java may not be functional in your browser or on your ma...More: lessons, discussions, ratings, reviews,...

This project uses Java and Flash technologies to graphically represent the concept of linear functions (of the form y = mx + b). The project has four sections including a demonstration, pre-think, Jav...More: lessons, discussions, ratings, reviews,...

Highlight the meaning of each component of a linear function's symbolic expression with this tool that links symbolic and graphic representations of translating (dragging) a line vertically or horizon...More: lessons, discussions, ratings, reviews,...

One or two player game reinforcing slope and intercept. Three levels of play help students ramp up from lines passing through the origin, to lines with a fixed y-intercept, to lines through two fixed...More: lessons, discussions, ratings, reviews,...

Choose the speed at which two cats catch mice, and the time
until the faster mousecatcher catches up to the slower one;
then predict when the two will have the same number of mice.
This tool offer...More: lessons, discussions, ratings, reviews,...

The equals sign has many other uses and interpretations. Each use provides an alternative viewpoint on the concept of equality, a different way in which mathematical objects can be equivalent.More: lessons, discussions, ratings, reviews,...

This is a Java graphing applet that can be used online or downloaded. The purpose it to construct dynamic graphs with parameters controlled by user defined sliders that can be saved as web pages or em...More: lessons, discussions, ratings, reviews,...

The user learns about rates and how to use formulas for solving word problems. After viewing examples, users can interactively practice problems using proportions or the distance formula to find the m...More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the
National Science Foundation.